EP0293455A1 - Rotary device. - Google Patents
Rotary device.Info
- Publication number
- EP0293455A1 EP0293455A1 EP88900423A EP88900423A EP0293455A1 EP 0293455 A1 EP0293455 A1 EP 0293455A1 EP 88900423 A EP88900423 A EP 88900423A EP 88900423 A EP88900423 A EP 88900423A EP 0293455 A1 EP0293455 A1 EP 0293455A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- rotary device
- fluid
- radially
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/12—Scanning systems using multifaceted mirrors
- G02B26/121—Mechanical drive devices for polygonal mirrors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/045—Sliding-contact bearings for exclusively rotary movement for axial load only with grooves in the bearing surface to generate hydrodynamic pressure, e.g. spiral groove thrust bearings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S310/00—Electrical generator or motor structure
- Y10S310/06—Printed-circuit motors and components
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Sliding-Contact Bearings (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
Le dispositif rotatif est utilisé comme élément de précision tel qu'un lecteur optique. Le dispsitif comprend un rotor (12, 62) qui comprend un élément entraîné tel qu'un polygone (14; 64) ayant une pluralité de surfaces-miroirs, des moyens (18; 63) supportant le rotor (12; 62) pour son mouvement de rotation, et un moteur d'entraînement pour le rotor. Les moyens de support du rotor (18; 63) comprennent un palier de butée (44, 49, 42; 76, 78, 73). De manière à obtenir un dispositif rotatif ayant un profil bas et un nombre minimum de composants, un moteur plan (16, 30; 74, 68) est utilisé comme moteur d'entraînement, et l'aimant permanent (16; 68) du moteur est incorporé dans le rotor (12; 62). Le palier de butée (44, 49, 42; 76, 78, 73) comprend des moyens (42; 73) pour diriger une force axiale contre une surface radiale (44; 76) du rotor (12; 62) lorsque le moteur est actionné.The rotary device is used as a precision element such as an optical reader. The device comprises a rotor (12, 62) which comprises a driven element such as a polygon (14; 64) having a plurality of mirror surfaces, means (18; 63) supporting the rotor (12; 62) for its rotational movement, and a drive motor for the rotor. The rotor support means (18; 63) includes a thrust bearing (44, 49, 42; 76, 78, 73). In order to obtain a rotary device having a low profile and a minimum number of components, a planar motor (16, 30; 74, 68) is used as the drive motor, and the permanent magnet (16; 68) of the motor is incorporated in the rotor (12; 62). The thrust bearing (44, 49, 42; 76, 78, 73) includes means (42; 73) for directing an axial force against a radial surface (44; 76) of the rotor (12; 62) when the engine is operated.
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US94212086A | 1986-12-16 | 1986-12-16 | |
US942120 | 1986-12-16 | ||
US07/123,836 US4958098A (en) | 1986-12-16 | 1987-11-23 | Rotary device |
US123836 | 1987-11-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0293455A1 true EP0293455A1 (en) | 1988-12-07 |
EP0293455B1 EP0293455B1 (en) | 1992-05-06 |
Family
ID=26821948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88900423A Expired - Lifetime EP0293455B1 (en) | 1986-12-16 | 1987-12-07 | Rotary device |
Country Status (5)
Country | Link |
---|---|
US (1) | US4958098A (en) |
EP (1) | EP0293455B1 (en) |
JP (1) | JPH01501577A (en) |
CA (1) | CA1296208C (en) |
WO (1) | WO1988004787A1 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4984881A (en) * | 1989-12-19 | 1991-01-15 | Ebara Corporation | Rotation supporting device of a polygon mirror |
US5325006A (en) * | 1990-04-27 | 1994-06-28 | Hitachi, Ltd. | Sealed magnetic fluid bearing for polygon mirror drive motor |
GB2246400B (en) * | 1990-07-28 | 1994-01-26 | Glacier Metal Co Ltd | Magnetic bearings |
US5565052A (en) * | 1992-03-05 | 1996-10-15 | Industrieanlagen-Betriebsgesellschaft Gmbh | Method for the production of a reflector |
GB2266009B (en) * | 1992-04-08 | 1996-08-07 | Fluid Film Devices Limited | Improvements in or relating to electric motors |
GB2268984B (en) * | 1992-07-23 | 1996-04-03 | Glacier Metal Co Ltd | Magnetic bearing back-up |
DE69427860T2 (en) * | 1993-02-03 | 2002-04-11 | Nitor San Jose | METHOD AND DEVICE FOR PROJECTING IMAGES |
DE4433021C2 (en) * | 1994-09-16 | 1999-04-15 | Forschungszentrum Juelich Gmbh | Device for breaking flow vortices on a tangential and turbulent surface |
JPH09303383A (en) * | 1996-05-09 | 1997-11-25 | Konica Corp | Rotary device and light deflecting device |
US6169354B1 (en) | 1996-05-24 | 2001-01-02 | Halo Data Devices, Inc. | Thin film electric motors |
JPH10184685A (en) * | 1996-12-25 | 1998-07-14 | Fuji Xerox Co Ltd | Magnetic bearing |
US6204588B1 (en) | 1999-05-27 | 2001-03-20 | Halo Data Devices, Inc. | Rotor capable of being used as a recording media |
US6054786A (en) * | 1999-05-27 | 2000-04-25 | Halo Data Devices, Inc. | Method and system for providing a spherical bearing in a thin film reluctance motor |
DE10332438A1 (en) * | 2003-07-16 | 2005-04-14 | Studiengesellschaft Kohle Mbh | Materials encapsulated in porous matrices for reversible hydrogen storage |
SG139520A1 (en) * | 2003-08-12 | 2008-02-29 | Sony Corp | Methods for producing hard disk drives of reduced size, hard disk drives produced by the method, and systems including the hard disks. |
DE10361229B4 (en) * | 2003-12-24 | 2012-01-26 | Minebea Co., Ltd. | Spindle motor with storage system |
DE102006037543B4 (en) * | 2006-08-10 | 2009-08-27 | Aerolas Gmbh, Aerostatische Lager- Lasertechnik | Device with a directly driven rotary body and aerostatic bearing |
TWI440424B (en) * | 2008-10-17 | 2014-06-01 | Sunonwealth Electr Mach Ind Co | Thin dissipating fan |
GB2519060B (en) * | 2013-08-08 | 2016-08-03 | Yasa Motors Ltd | Cooling of axial flux motors - centrifugal |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL134857C (en) * | 1969-02-24 | 1900-01-01 | ||
US3891282A (en) * | 1973-12-12 | 1975-06-24 | Litton Systems Inc | Lubricated assemblies |
CH611990A5 (en) * | 1977-01-17 | 1979-06-29 | Sulzer Ag | |
GB1524662A (en) * | 1977-03-24 | 1978-09-13 | Univ Southampton | Agnetic disc stores |
JPS54102445A (en) * | 1978-01-27 | 1979-08-11 | Matsushita Electric Ind Co Ltd | Fluid bearing revolving apparatus |
US4332428A (en) * | 1979-01-16 | 1982-06-01 | Matsushita Electric Industrial Co., Ltd. | Rotary mechanism with axial bearings |
DE2934085A1 (en) * | 1979-08-23 | 1981-03-26 | Papst Licensing Gmbh, 78549 Spaichingen | TACHOGENERATOR |
DE3303499A1 (en) * | 1982-02-05 | 1983-08-25 | Nippon Seiko K.K., Tokyo | DYNAMIC GAS STORAGE |
US4413895A (en) * | 1982-03-22 | 1983-11-08 | Eastman Kodak Company | Electromagnetic actuator having a compliant armature |
JPS58224324A (en) * | 1982-06-24 | 1983-12-26 | Toshiba Corp | Rotating mirror optical deflector |
EP0121829B1 (en) * | 1983-03-30 | 1987-05-20 | Wyler AG Wasserwaagen und Messwerkzeuge | Bearing element for a gas bearing |
DE3526166C2 (en) * | 1984-07-23 | 1996-05-02 | Asahi Chemical Ind | Brushless electric motor and method of manufacturing a coil unit therefor |
US4726640A (en) * | 1985-09-24 | 1988-02-23 | Ricoh Company, Ltd. | Optical deflector with a pneumatic and a magnetic bearing |
DE3674370D1 (en) * | 1985-11-28 | 1990-10-25 | Ebara Corp | ELECTRICALLY DRIVED DEVICE. |
JPH034220A (en) * | 1989-05-31 | 1991-01-10 | Konica Corp | Silver halide photographic sensitive material |
-
1987
- 1987-11-23 US US07/123,836 patent/US4958098A/en not_active Expired - Fee Related
- 1987-12-07 EP EP88900423A patent/EP0293455B1/en not_active Expired - Lifetime
- 1987-12-07 WO PCT/US1987/003216 patent/WO1988004787A1/en active IP Right Grant
- 1987-12-07 JP JP63500706A patent/JPH01501577A/en active Pending
- 1987-12-10 CA CA000553974A patent/CA1296208C/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO8804787A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1988004787A1 (en) | 1988-06-30 |
JPH01501577A (en) | 1989-06-01 |
US4958098A (en) | 1990-09-18 |
EP0293455B1 (en) | 1992-05-06 |
CA1296208C (en) | 1992-02-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4958098A (en) | Rotary device | |
US6340854B1 (en) | Scanner motor | |
US5574322A (en) | Motor, a printer having such a motor and a disk drive system having such a motor | |
US6608415B2 (en) | Spindle motor | |
EP0456456B1 (en) | Rotating mirror optical scanner with grooved grease bearings | |
KR940011647B1 (en) | Synchronous motor | |
GB2296945A (en) | Hydrodynamic fluid bearing with electromagnetic levitation | |
JPH06213229A (en) | Bearing device and drive device | |
JPH0819229A (en) | Motor | |
JP2637096B2 (en) | Air magnetic bearing type optical deflector | |
JPS59204441A (en) | Bearing | |
EP0655637A1 (en) | Light beam deflector including a magnetically-unweighted rotor assembly | |
JPH05332354A (en) | Bearing structure and scanner motor | |
JPH1031188A (en) | Polygon scanner | |
JPH04244768A (en) | Optical scanner | |
JP2952086B2 (en) | Deflection scanning device | |
JP2974514B2 (en) | Scanning optical device | |
JPH05248435A (en) | Bearing structure and scanner motor | |
JP2000120659A (en) | Dynamic pressure air bearing, motor with the bearing, and light polarizer | |
JPH09250543A (en) | Bearing device, motor and scanner motor for driving polygon mirror | |
JPH0387811A (en) | Scanner motor | |
JP2000184653A (en) | Motor with hydrodynamic air bearing | |
JPH06217485A (en) | Axial gap type motor and polygon mirror scanner motor | |
JPH09182357A (en) | Dynamic pressure bearing structure motor and instrument built in the motor | |
JPH05297312A (en) | Deflection scanning device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19880828 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB |
|
17Q | First examination report despatched |
Effective date: 19900904 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB |
|
REF | Corresponds to: |
Ref document number: 3778883 Country of ref document: DE Date of ref document: 19920611 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19951110 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19951213 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19951229 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19961207 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19961207 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19970829 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19970902 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |